Gun sight



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Filed May 15, 1930 IN VEN TDR.

Richard E Qgplani /n A BY ATTORNEY Patented Aug. 1s, 1931 FTENT OFFICE RICHARD C. COUPLAND, OF NORFOLK, VIRGINIA I GUN SIGHT Application filed May 15, 1930. Serial No. 452,767.

(GRNTED UNDER THE ACT 0F MARGH 3, 1883, AS AMENDED APRIL 30, 1928; 370 0. G. 757) The invention described herein may be manufactured and used by or for the Government for governmental purposes, without the payment to me of any royalty thereon.

The subject of this invention is a gun sight intended primarily as a receiver sight for rifles.

The purpose of the invention is to provide a small, compact and sturdy gun sight in which all the operating parts are protected against injury from blows irrespective of their position of adjustment.

The invention is characterized principally by a novel arrangement of interfitted frames, the inner frame being vertically movable and carrying a horizontally movable sight memb-er. The elevation and traversing shafts are coaXially carried by the outer frame, one of them being journaled in the other and receiving means for retaining the assembly.

With the foregoing and other objects in view, the invention resides in the novel arrangement and combination of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

A practical embodiment of the invention is illustrated in the accompanying drawings, wherein:

Fig. 1 is a view in rear elevation of the improved gun sight;

Fig. 2 is a plan view of Fig. 1;

Fig. 3 is a view in right side elevation of Fig. 1;

Fig. 4 is a sectional view on the line 4 4 of Fig. 2;

Figs. 5 and 6 are sectional views on the corresponding lines of Fig. 4;

Fig. 7 is a perspective view of the carrier; and

Fig. 8 is a perspective view of the H-shaped slide.

Referring to the drawings by characters of reference:

The sight comprises a base 5, which is formed to straddle the receiver of a rearm, the under surface of the base conforming to the contour of the receiver. The base is provided with openings 6 to receive means for attaching it to the receiver.

The upper portion of the base consists of a frame 7 whose side walls 8 8 and end walls 9-9 dene an oblong well 10 which is disposed transversely of the gun when the base is mounted thereon. The well extends into the end walls 9 as indicated at 11 (Fig. 2) and the end walls are raised above the side walls as at 12.

Mounted in the well 10 is an H-shaped slide 13 whose upper arms 1%14 are coeXtensive with the raised end walls 9 when the slide is in lowermost position. The lower arms 15-15 of the slide are receivable in correspondingly shaped recesses 16 in the base which recesses are in communication with the well 10. The lower arms 15 are each bifurcat'ed to straddle the traversing screw 26, and one of the branches of the right hand arm is provided with rack teeth 17 on its inner face. Meshing with the rack is a pinion 18 whose shaft 19 is journaled in the end wall 9 of the frame and terminally carries a knob or thuipb wheel 20 which may be integral therewit The cross piece 21 of the H-shaped slide is provided with an oblong opening 22 conforming substantially to the well 10 so that in effect the slide is a frame within the frame 7.

Within the opening 22 of the slide is a carrier 23 having spaced legs 24, each of which is bifurcated to straddle the traversing screw 26. A nut 25 positioned between the legs 24 and having a sliding fit therewith receives the traversing screw 26 one end of which is journaled in the left han-d end wall 9 and the other end passes through the ele- GJI vating shaft 19 and carries a circular nut 27 housed in a recess in the thumb-wheel 2() of the elevating shaft 19. When a thumb wheel 28 is fixed to the left hand end of the screw the assembly is completed and the thumb wheels may be individually rotated without affecting each other.

The carrier has a sliding connection with the slide as indicated by the tongue and groove arrangement (Fig. 5) so that while it is movable vertically with the slide it is also capable of moving horizontally thereof. In the present instance the tongue 29 is on the carrier and the groove 29al in the slide.

On the upper end of the carrier is a sight member 30 which in the present instance is a peep sight. Irrespective of the type or character of this sight member it should not project above the upper arms 14 of the slide.

The crosspiece 21 of the slide is provided with a vertically disposed groove 31 in one of its external faces and this groove is preferably positioned close to the actuating mechanism consisting of the rack 17 and pinion 18. A guide 32 is secured to the side wall 8 of the frame 7 by means of rivets 33 and has a close sliding fit in the corresponding groove 31 dto insure true vertical movement of the sli e.

The thumb wheels 20 and 28 are each provided with a click latch consisting of a fiat spring 34 retained by screws 35 in a recess 36 in the inner face of the thumbwheel and having a projection37 adapted to engage in recesses 38 spaced angularly on the external face of the end wall 9 of the frame 7.

By acting on the right hand thumbwheel 20 the slide is moved vertically with respect to the frame 7 and by virtue of the connection 29--29a the carrier will also partake of this movement. The sight member 30 is thus elevated or depressed in accordance with the range to the target and the amount of movement may be conveniently indicated by a. range scale 39 inscribed on the frame 7 and readable against a reference mark 40 on the thumbwheel 20. If desired the range scale may also be placed on one of the upper arms 14 of the slide, as indicated in dotted lines at 39a in Fig. 1.

By acting on the left hand thumbwheel 28 the nut 25 is translated across the frame 7 and moves the carrier 23 horizontally toapply lateral corrections corresponding to wind and drift. The amount of displacement is indicated by the scale 41 and reference marl: 42.

The arrangement of the interlitting frame 7 and slide 13 provides a compact and strong structure which protects the sight member 3() against injury, even though the slide is in elevated position. The positioning of the windage and elevating handwheels on opposite sides of the sight base enables both of these members to be of a size sufficiently large to facilitate manipulation and provides a simple and effective method of retaining the component parts in assembled relation. Close adjustment of the thumbwheels with respect to the end walls may be maintained so that blows may be received by the thumbwheels without danger of injuring the pinion 18 and screw 26.

I claim:

1. A gun sight comprising a frame having raised end walls, a shaft ournaled in one end wall, a pinion on the shaft, a screw shaft journaled in the other end wall and also in the pinion shaft, a slide mounted in the frame for vertical movement and having an open crosspiece and raised end walls coeXtensive with the raised end walls of the frame when the slide is in lowermost position, said slide straddling the screw shaft and pinion, a rack on the slide meshing with the pinion, a carrier in the open crosspiece of the slide and having a horizontal sliding connection therewith, spaced members on the carrier each straddling the screw shaft, a nut between said members and threaded on the screw shaft, a circular nut housed in the pinion shaft and threaded on the end of the screw shaft, vertical guides between the slide and frame ad-q jacent the pinion, and a sight member on the carrier.

2. A gun sight comprising a frame having raised end walls, a shaft journaled in one end wall, a pinion on the shaft, a screw shaft journaled in the other end wall and also 1n the pinion shaft, a slide mounted in the frame for vertical movement and having an open crosspiece and raised end walls when the slide is in lowermost position, said slide straddling the screw shaft and pinion, a rack on the slide meshing with the pinion, a carrier in the open crosspiece of the slide and having a horizontal slidin connection therewith, spaced members on t e carrier each straddling the screw shaft, a nut between said members and threaded on the screw shaft, a circular nut housed in the pinion shaft and threaded on the end of the screw shaft, and a sight member on the carrier.

3. A gun sight comprising a frame having raised end walls, a shaft j ournaled in one end wall, a pinion on the shaft, a screw shaft journaled in the other end wall and also in the pinion shaft, a slide mounted in the frame for vertical movement and having an open crosspiece and raised end walls when the slide is in lowermost position, said slide straddling the screw shaft and pinion, a rack on the slide meshing with the pinion, a carrier in the open crosspiece of the slide and having a horizontal sliding connection therewith, spaced members on the carrier each straddling the screw shaft, a nut between said members and threaded on the screw shaft, means for retaining the screw shaft in assembled relation wir. cam-imc. s rind-ML 2mm i I1 @.3 lvl-3.1M im.

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with respect to the pinion shaft, and a sight member on the carrier.

4. A gun sight comprising a frame, a shaft journaled in one end wall, a pinion on the shaft, a screw shaft journaled in the other end wall and also in the pinion shaft, a slide having an oblong opening mounted in the frame for vertical movement, a rack on the slide meshing with the pinion, a carrier carried by the slide and mounted for transverse movement inv the opening thereof, a nut threaded on the screw shaft and engageable with the carrier, a sight member on the carrier, and means for retaining the screw shaft in assembled relation with respect to the pinion shaft.

5. A gun sight comprising a frame, a shaft journaled in one end wall, a pinion on the shaft, a screw shaft journaled in the other end wall and also in the pinion shaft, a slide having a vertically disposed oblong opening mounted in the frame for vertical movement, amalgame-Slidemeshing,nithfh pinion,

@Carrier Carrie/dry tl'lideramfaniegl for transveijusnewrnvement in the opening thereof, a nut threaded on the screwwsliaft'a'nd 'n'gageble with the carrier, and a sight member on the carrier.

6. A gun sight comprising a support, a shaft journaled in one end wall of the support, a pinion on the shaft, a screw shaft journaled in the other end wall of the support and also in the pinion shaft, a slide mounted in the frame for movement in elevation, a rack on the slide meshing with the pinion, a carrier carried by the slide and mounted for movement transversely thereof, a nut threaded on the screw shaft and engageable with the carrier and a sight member on the carrier.

7. A gun sight comprising a frame having raised end walls, a slide having an oblong opening mounted Within the frame for movement in elevation and also having raised end Walls coeXtensive with the raised end Walls of the frame when the slide is in lowermost position, a carrier carried by the slide and mounted for transverse movement in the opening thereof, a sight member on the carrier, means for elevating the slide and means for traversing the carriage.

8. A gun sight comprising a frame having raised end walls, a slide mounted within the frame for movement in elevation and also having raised end walls coextensive with the raised end walls of the frame when the slide is in lowermost position, a carrier carried by the slide and mounted for transverse movement thereof, a sight member on the carrier, means for elevating the slide and means for traversing the carriage.

9. In a gun sight, a slide mounted fqr movement in elevation, a carrier carried by the slide and mounted for movement transversely thereof, a sight member on the carrier, coaxial operating shafts having independent rotary movement for respectively elevating the slide and traversing the carrier, the traversing shaft being journaled at one end in the elevating shaft, and retaining means on the traversing shaft housed in the elevating shaft and rotatable with respect thereto.

10. In a gun sight, a slide mounted for movement in elevation, a carrier carried by the slide and mounted for movement transversely thereof, a sight member on the carrier and coaxial operating shafts having independent rotary movement for respectively elevating the slide and traversing the carrier, the traversing shaft being journaled at one end in the elevating shaft.

11. In a gun sight, a slide mounted for movement in elevation, a carrier carried by the slide and mounted for movement transversely thereof, a sight member on the carrier, and coaxial operating shafts having independent rotary movement for respectively elevating the slide and traversing the carrier.

12. A gun sight comprising a support, a slide mounted on the support for movement in elevation, a carrier carried by the slide and mounted for movement transversely thereof, a sight member on the carrier, an elevating shaft for the slide mounted horizontally7 in one side of the support and a traversing shaft for the carrier mounted horizontally in the other side of the support.

13. A gun sight comprising ansupport, a .sidmwmedanfasiriie fsm-@Seinem \in`elv'atn,ma carrier carried by theslide admnuntedwformmovement transversely thereofha sight member on the `carrie'r',"`an

elevating shaft for the slide mounted in one side of the support and a traversing shaft for the carrier mounted in the other side of the support.

14. In a gun sight, a frame, a slide mounted in the frame for vertical movement, a rack on the slide, a shaft carried by the side of the frame adjacent the rack, a pinion on the shaft meshing with the rack and a vertical guide between the slide and frame, said guide positioned adjacent the pinion.

15. In a gun sight, a support, an elevating shaft journaled in one wall of the support, a traversing screw journaled in the opposite wall of the support and also journaled in the elevating shaft, and retaining means on the traversing shaft housed in the elevating shaft and rotatable with respect thereto.

16. In a gun sight, a support, an elevating shaft journaled in one wall of the support, a traversing screw journaled in the opposite wall of the support and also journaled in the elevating shaft, and means for retaining the traversing shaft in assembled relation with respect to the elevating shaft.

17. In a gun sight, a member movable in elevatlon, a member movable transversely to said movement in elevation, Ind coaxial opera-ting shafts for said members having independent rotary movement.

18. In a gun sight, a pair of coaxial operating shafts, one of said shafts having one end jonrnaled in the other shaft.

19. In a gun sight, a support, an operating shaft journaled in one end of the support and extending through the other end, and a, second operating shaft, mounted on said extending end of the'rst shaft.

RICHARD C. COUPLAND. 

